Fig. 4

Synteny between the five chromosome-scale Hydrophis sea snakes and Thamnophis elegans. Chromosome sequences have been reverse transcribed in some instances to correct for strand variation between assemblies to improve interpretability (see Additional file 1: Fig. S16). Inter-chromosomal rearrangements are highlighted in dark-blue, chromosome fusion/fission events are in red and the chromosome 6 and 14 fusion/fission event which alternates between each of the Hydrophis snakes is in yellow